Github user zentol commented on the issue:
https://github.com/apache/flink/pull/3709
eh... in charge?
Whenever *anything* related to a job is requested from the web-ui the
EGHolder is accessed.
Suppose you have the job info page (/jobs/:jobid) open in a browser or
smth. The WebUI periodically sends requests to the backend, which will asks the
EGHolder, which then asks the JM if it doesn't find the job in the cache. Now,
if we remove the suspended EG we will in fact keep polling the JM until the job
was recovered.
This is actually the same behavior that you would have if the job is
suspended and the GC/guava cache starts right away rr if the job was resumed on
another JM but you aren't refreshing the webUI (which should redirect to the
current leader).
So for adding entries nothing changes; for removing entries the GC is still
mostly in charge; we're just adding a small 2-line branch to invalidate
suspended ExecutionGraphs that is activated if a handler accesses the EGHolder.
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